forked from DGNum/liminix
77922c875b
presently this is used to reference the appropriate kernel and (if needed) openwrt source trees, but I would not be surprised if we find other uses
82 lines
3 KiB
Nix
82 lines
3 KiB
Nix
{
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device ? (import devices/gl-ar750.nix)
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, phram ? false
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}:
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let
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overlay = import ./overlay.nix;
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nixpkgs = import <nixpkgs> (device.system // {overlays = [overlay device.overlay]; });
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inherit (nixpkgs.pkgs) callPackage writeText liminix;
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inherit (nixpkgs.lib) concatStringsSep;
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config = (import ./merge-modules.nix) [
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./modules/base.nix
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({ lib, ... } : { config = { inherit (device) kernel; }; })
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<liminix-config>
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./modules/s6
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./modules/users.nix
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(if phram then ./modules/phram.nix else (args: {}))
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] nixpkgs.pkgs;
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squashfs = liminix.builders.squashfs config.filesystem.contents;
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kernel = callPackage ./kernel {
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inherit (config.kernel) config checkedConfig;
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};
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outputs = rec {
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inherit squashfs kernel;
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dtb = kernel.dtb {
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dts = "qca9531_glinet_gl-ar750.dts";
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};
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uimage = kernel.uimage {
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commandLine = concatStringsSep " " config.boot.commandLine;
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inherit (device.boot) loadAddress entryPoint;
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inherit (kernel) vmlinux;
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inherit dtb;
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};
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combined-image = nixpkgs.pkgs.runCommand "firmware.bin" {
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nativeBuildInputs = [ nixpkgs.buildPackages.ubootTools ];
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} ''
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mkdir $out
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dd if=${uimage} of=$out/firmware.bin bs=128k conv=sync
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dd if=${squashfs} of=$out/firmware.bin bs=128k conv=sync,nocreat,notrunc oflag=append
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'';
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boot-scr =
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let
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inherit (nixpkgs.lib.trivial) toHexString;
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uimageStart = 10485760; # 0xa00000
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squashfsStart = uimageStart + 4 * 1024 * 1024;
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squashfsSize = 8;
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cmd = "mtdparts=phram0:${toString squashfsSize}M(nix) phram.phram=phram0,0x${toHexString squashfsStart},${toString squashfsSize}Mi memmap=${toString squashfsSize}M\$0x${toHexString squashfsStart} root=1f00";
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in
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nixpkgs.pkgs.buildPackages.writeScript "firmware.bin" ''
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setenv serverip 192.168.8.148
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setenv ipaddr 192.168.8.251
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setenv bootargs '${concatStringsSep " " config.boot.commandLine} ${cmd}'
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tftp 0x8${toHexString uimageStart} result/uimage ; tftp 0x8${toHexString squashfsStart} result/squashfs
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bootm 0x${toHexString uimageStart}
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'';
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directory = nixpkgs.pkgs.runCommand "liminix" {} (''
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mkdir $out
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cd $out
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ln -s ${squashfs} squashfs
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ln -s ${kernel.vmlinux} vmlinux
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ln -s ${manifest} manifest
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'' +
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(if device ? boot then ''
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ln -s ${uimage} uimage
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${if phram then "ln -s ${boot-scr} boot.scr" else ""}
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ln -s ${boot-scr} flash.scr
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'' else ""));
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# this exists so that you can run "nix-store -q --tree" on it and find
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# out what's in the image, which is nice if it's unexpectedly huge
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manifest = writeText "manifest.json" (builtins.toJSON config.filesystem.contents);
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tftpd = nixpkgs.pkgs.buildPackages.tufted;
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};
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in {
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outputs = outputs // { default = outputs.${device.outputs.default}; };
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# this is just here as a convenience, so that we can get a
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# cross-compiling nix-shell for any package we're customizing
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inherit (nixpkgs) pkgs;
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}
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